54521-74-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 54521-74-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,5,2 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 54521-74:
(7*5)+(6*4)+(5*5)+(4*2)+(3*1)+(2*7)+(1*4)=113
113 % 10 = 3
So 54521-74-3 is a valid CAS Registry Number.